Bug 491615 - BMPs in RGBA 5551 format load as translucent
Summary: BMPs in RGBA 5551 format load as translucent
Status: CONFIRMED
Alias: None
Product: krita
Classification: Applications
Component: File formats (show other bugs)
Version: 5.2.3
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-08-12 11:27 UTC by behreandtjeremy
Modified: 2024-10-22 09:07 UTC (History)
2 users (show)

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RGBA16 bmp file (642 bytes, image/bmp)
2024-08-12 11:27 UTC, behreandtjeremy 		Details
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Description behreandtjeremy 2024-08-12 11:27:45 UTC 
Created attachment 172537 [details]
RGBA16 bmp file

Krita Version 5.2.3
Windows 10

BMP files in the format RGBA 5551 load as translucent. Expected outcome is that 1-bit alpha is either transparent or opaque.

Forum post: https://krita-artists.org/t/bmp-in-rgba5551-format-opens-as-translucent/98856 .
Comment 1 Halla Rempt 2024-08-12 11:31:32 UTC 
We don't have our own code for loading bmp images, we use Qt's qimageio plugin for that, so we can't actually implement this unless we'd write a plugin from scratch. Right now we don't have plans for that.
Comment 2 Dmitry Kazakov 2024-10-22 09:07:25 UTC 
Hi, Jeremy!

Where is this file format actually used? Could you tell the usecases? 

PS:

Given that we don't have any code that loads this file format, I would propose to move this bug upstream to Qt, unless there is a popular and important usecase for Krita users.